Coffee maker



FIG. 1 is a top front perspective view of a coffee maker showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left-side view thereof;

FIG. 5 is a right-side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a bottom front perspective view thereof.

The broken lines are for environmental purposes only and form no part of the claimed design. The dot dash lines in the figures represent an unclaimed boundary line and form no part of the claimed design. 

CLAIM We claim the ornamental design for a coffee maker, as shown and described. 